WF on UE mandatory channel bandwidth for NR bands 3GPP TSG-RAN WG4 #85 meeting Reno, US, 28th Nov. – 1st Dec., 2017 [draft]R4-1714105 WF on UE mandatory channel bandwidth for NR bands NTT DOCOMO, …

Background Agreements at RAN4 #NR-AH2 (R4-1706977): Definition of UE Channel bandwidth (R4-1709930): The RF bandwidth supporting a single NR RF carrier with the transmission bandwidth configured in the uplink or downlink of a cell. The channel bandwidth is measured in MHz and is used as a reference for transmitter and receiver RF requirements. Agreements at RAN4 #NR-AH2 (R4-1706977): UE can support different max CBW in DL and UL UE can operate with different UL and DL bandwidth. Agreements at RAN4 #84 (R4-1708845): UE maximum channel bandwidth is a UE capability. It is FFS if the UE capability is per band or a group of bands (such as sub6 and mmWave) UE shall meet either a single carrier or CA based RF requirements for the channel bandwidths in Slide #3-#4 that is equal to or smaller than UE maximum channel bandwidth for any SCS. RAN4 should agree some threshold value for which BW’s should be supported by single CC configuration.

Current operator’s request (for information) Below 3GHz NR Band Data SCS = 15kHz Data SCS = 30kHz Data SCS = 60kHz (for more than 1GHz bands) 5MHz 10MHz 15MHz 20MHz 25MHz 30MHz 40MHz 50MHz 10MHz (Note 1) 60MHz 80MHz (Note 2) 100 MHz (Note 2) 15MHz (Note 1) 20MHz (Note 1) 25MHz (Note 1) 1.427-1.518 GHz Yes Band 1 Band 2 Band 3 Band 5 Band 7 Band 8 Band 20 Band 28 Band 38 Band 41 Band 50 Band 51 Band 66 Band 70 Band 71 Band 74 Band 75 Band 76 Note 1: 90% spectrum utilization may not be achieved Note 2: UE may support this Channel Bandwidth Note: 30MHz was agreed to introduce into band n3 in RAN4 #85.

Current operator’s request (for information) 3GHz – 6Ghz [2] n77, n78 n79 n77/78 UE channel bandwidth [MHz] Operator Data SCS = 15kHz Data SCS = 30kHz 10 15 20 40 50 60 80 100 Operator A, B, C, D, E M Operator F, G, L Operator H Operator I n79 UE channel bandwidth [MHz] Operator Data SCS = 15kHz Data SCS = 30kHz 40 50 60 80 100 Operator A, B, C M

Current operator’s request (for information) 24.25-52.6GHz (FR2) [2] n257, n258 n259 n257/258 UE channel bandwidth [MHz] Operator Data SCS = 60kHz Data SCS = 120kHz 50 100 200 400 Operator A, B, C, L M Operator D, E, J, K n260 UE channel bandwidth [MHz] Operator Data SCS = 60kHz Data SCS = 120kHz 50 100 200 400 Operator J, K M

Way forward For Rel.15 NR UE, RAN4 introduce some threshold value for each frequency range for which BW’s should be supported by single CC configuration Frequency range: below 3GHz, 3-6GHz, 24.25-52.6GHz (FR2) Carrier Aggregation support shall be discussed separately FFS: SCS-specific threshold or maximum threshold within SCS Send LS to RAN1 (reply to R4-1712102) in RAN4#85 to inform that the threshold value shall be equal or larger than the maximum CBW in LTE, i.e. 20MHz with 15k SCS, as a minimum requirement For operation with 15kHz*2^n SCS, at least UE shall support 20*2^n MHz CBW in both DL and UL Note1: For n79 (4.4-5.0GHz), UE shall support 40MHz even in 15kHz SCS since min CBW is 40MHz Note2: In FR2, since CBW set is {50, 100, 200, 400MHz}, minimum requirement is 100/200MHz for 60/120kHz SCS, which is the closest value to 80/160MHz During RAN4 #85, RAN4 continues the discussion on the exact threshold values Detail is in the next slide Freq. range 15kHz SCS 30kHz SCS 60kHz SCS 120kHz SCS Below 3GHz / 3-6GHz 20MHz 40MHz 80MHz 24.25-52.6GHz 100MHz 200MHz

Proposed threshold Agree the following threshold values as working assumption The values could be revisit if some issues to support those values are identified considering supported MIMO layers, modulation order, etc The threshold is applied at least for eMBB. Low cost UE capability (i.e. low data rate devices) is not precluded and is to be handled separately In case no agreement, RAN4 is requested to send the overview to RAN#78 discussion and decision Freq. range 15kHz SCS 30kHz SCS 60kHz SCS (Note1) 120kHz SCS Below 3GHz DL 25MHz 50MHz 100MHz UL 3-6GHz 24.25-52.6GHz 200MHz Note 1: if UE has 60kHz SCS capability for the bands between 1-6GHz

References R4-1712155 New UE mandatory channel bandwidth for NR band3 China Unicom R4-1712165 UE Channel Bandwidth support in NR Dish Network R4-1713179 Discussion on UE mandatory channel bandwidth for new NR bands NTT DOCOMO, INC. R4-1713543 NR channel bandwidth and UE mandatory channel bandwidth for NR Band 3 China Unicom